Wheel cap



FIG. 1 is a perspective view of the wheel cap showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a cross-sectional view taken along the line 3-3 of FIG. 2; and,

FIG. 4 is a cross-sectional view taken along the line 4-4 of FIG. 2.

The broken lines showing the environment are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for the wheel cap, as shown and described. 